molar Confi guration masti cat i on fixedness
molar Configuration, mastication, fixedness
point 1.crown: large cube bucco ingually: trapez ia deve l opmental grooves for drainage prox imaI surface: quadrangle occ lusaI surface: 4-5 cusps
1.crown：large cube buccolingually：trapezia, developmental grooves for drainage proximal surface：quadrangle occlusal surface：4-5 cusps point
point 2. root: stur dy root trunk maxillary: 3 roots bucco l lingually mandible: 2 roots mesioditally
2.root:sturdy root trunk maxillary：3 roots buccolingually mandible：2 roots mesioditally point
olar 1. maxillary first molar 66 normal ly the largest teeth
1.maxillary first molar 6 6 normally the largest teeth Molar
Cr own 1 buccal surface a. broad(近远中径>牙合颈径) trapez i a slope di sto l lingually b mes ial out l ine straight cervical line convex c two bucca cusps width and he i ght 近中颊尖的颊轴嵴显著
Crown 1）buccal surface a.broad(近远中径>牙合颈径)trapezia slope distolingually b.mesial outline straight, cervical line convex c.two buccal cusps width and height 近中颊尖的颊轴嵴显著